(CANCELED) Ensure before/after is within the editable in moveParagraphWithClones

third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 1399 matching lines @@
 
 void CompositeEditCommand::moveParagraphWithClones(
     const VisiblePosition& startOfParagraphToMove,
     const VisiblePosition& endOfParagraphToMove,
     HTMLElement* blockElement,
     Node* outerNode,
     EditingState* editingState) {
   DCHECK(outerNode);
   DCHECK(blockElement);
 
-  VisiblePosition beforeParagraph = previousPositionOf(startOfParagraphToMove);
-  VisiblePosition afterParagraph = nextPositionOf(endOfParagraphToMove);
+  VisiblePosition beforeParagraph =
+      previousPositionOf(startOfParagraphToMove, CannotCrossEditingBoundary);
+  VisiblePosition afterParagraph =
+      nextPositionOf(endOfParagraphToMove, CannotCrossEditingBoundary);
 
   // We upstream() the end and downstream() the start so that we don't include
   // collapsed whitespace in the move. When we paste a fragment, spaces after
   // the end and before the start are treated as though they were rendered.
   Position start =
       mostForwardCaretPosition(startOfParagraphToMove.deepEquivalent());
   Position end =
       startOfParagraphToMove.deepEquivalent() ==
               endOfParagraphToMove.deepEquivalent()
           ? start
@@ skipping 589 matching lines @@
   return node;
 }
 
 DEFINE_TRACE(CompositeEditCommand) {
   visitor->trace(m_commands);
   visitor->trace(m_composition);
   EditCommand::trace(visitor);
 }
 
 }  // namespace blink